EP0409959B1 - Agencement pour aspirateur - Google Patents

Agencement pour aspirateur Download PDF

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Publication number
EP0409959B1
EP0409959B1 EP90903242A EP90903242A EP0409959B1 EP 0409959 B1 EP0409959 B1 EP 0409959B1 EP 90903242 A EP90903242 A EP 90903242A EP 90903242 A EP90903242 A EP 90903242A EP 0409959 B1 EP0409959 B1 EP 0409959B1
Authority
EP
European Patent Office
Prior art keywords
secondary circuit
circuit
operating
vacuum cleaner
pulses
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP90903242A
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German (de)
English (en)
Other versions
EP0409959A1 (fr
Inventor
Mikael Andreas Wolfgang Schiller
Per Anders Melin
Leif Erik Edlund
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Electrolux AB
Original Assignee
Electrolux AB
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Filing date
Publication date
Application filed by Electrolux AB filed Critical Electrolux AB
Publication of EP0409959A1 publication Critical patent/EP0409959A1/fr
Application granted granted Critical
Publication of EP0409959B1 publication Critical patent/EP0409959B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
    • A47L9/2857—User input or output elements for control, e.g. buttons, switches or displays
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
    • A47L9/2805—Parameters or conditions being sensed
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
    • A47L9/2805—Parameters or conditions being sensed
    • A47L9/2831—Motor parameters, e.g. motor load or speed
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
    • A47L9/2836—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means characterised by the parts which are controlled
    • A47L9/2842—Suction motors or blowers

Definitions

  • the present invention relates to an arrangement for a vacuum cleaner of the kind indicated in the preamble of the appending claim 1.
  • the coil and capacitor of the primary circuit is supplied by an oscillator of a frequency coinciding with the resonant frequency of the circuit, maximizing the current in said circuit.
  • a load is connected which comprises a number of resistors, corresponding to different operating modes, each of which being connected in series with a manually operable contact.
  • a selected contact brings the desired resistor to be connected in parallel to a series circuit formed by a secondary coil and a capacitor.
  • the primary resonant circuit can be loaded to various degrees, causing the voltage across the primary circuit capacitor to take different identifiable levels.
  • the number of levels is limited by the fact that said levels have to be identifiable in a safe way. In practice, problems may arise at a number of levels exceeding four.
  • the object of the invention is to eliminate the limitation as to the number of levels in a vacuum cleaner of the kind referred to and to provide an arrangement permitting the transfer of information from a manual control device disposed on the hose-mounted handle and concerning an arbitrary number of operating modes.
  • Fig. 1 shows a vacuum cleaner 10 of common design. Via a hose 11, having a hose handle 12 and an extension tube 13, the cleaner is connected to a dust collecting nozzle 14. As shown in Fig. 2, the vacuum cleaner is provided with an inlet opening 15 and an outlet opening 16. By a suction fan 17, driven by an electric motor 18, an air stream is established between said inlet and outlet openings. The air stream passes a dust container 19 in which dust, conveyed with the air stream, is kept.
  • An electronic control device 20 is provided in the vacuum cleaner to make possible operation at various speeds. The control device can be operated by an operating member 21, disposed on the hose handle 12 and being, for instance, a slide switch which can be set into four different positions closing four different contacts, as will be described more in detail below.
  • the operating member 21 is part of an operating device 22, shown in Fig. 3. By sliding of the operating member the desired contact can be closed.
  • the operating device is interconnected with a logic arrangement 23 which co-operates with a contact 24 being, in series with a capacitor, connected in parallel with the secondary coil 26 of an air transformer 27.
  • the primary coil 28 of the transformer is connected in series with a capacitor 29 forming therewith a series resonant circuit 30 supplied form an oscillator 31.
  • the primary coil is disposed in the vacuum cleaner and the secondary coil is disposed in the hose at the end connecting to the vacuum cleaner, indicated in Fig. 1 by arrow 32.
  • Via a conductor 33 the connecting point between the coil 28 and the capacitor 29 is connected to a level detector 34, the function of which will be described below.
  • Via a conductor 35 the level detector is connected to a counter 36 which is also, via a conductor 37, connected to the conductor 33.
  • the counter is connected to a decoder 38 which in turn is connected to the
  • the oscillator 31 feeds the series resonant circuit, comprising the primary coil 28 and the capacitor 29, at a frequency maximizing the current in said circuit.
  • a voltage is induced in the secondary coil 26, said voltage being used also for powering of the logic arrangement 23.
  • a smoothed DC voltage is generated by a diode 39 and a smoothing capacitor 40.
  • the level detector 34 Upon the decrease of the capacitor voltage U c the level detector 34 is again activated operating the counter to start counting. When, after the period T1, the level is again increasing, the level detector is again activated stopping the counter. The count corresponds to the time T1 and is decoded in the decoder 38 emitting an output voltage depending on the count and thereby indicating the closing of contact 22a.
  • the closing of the contact 22b is indicated by the logic arrangement 23 keeping the contact 24 closed during a longer time T2, for instance amounting to 2 x T1.
  • the counter 36 has time to count twice as many pulses as in the first-mentioned case and the corresponding output voltage from the decoder 38 will be correspondingly higher.
  • FIG. 5 An alternative embodiment is shown in Fig. 5 and is being described also with reference to Fig. 6.
  • the circuit is the same as in Fig. 3, however, differing in that, via a conductor 41, the oscillator has a feed-back-loop from the connecting point between the primary coil 28 and the capacitor 29. This feed-back causes the frequency of the oscillator to depend on the condition in the secondary circuit.
  • Fig. 6 at the top, the voltage U c across the capacitor 29 has been given a mainly constant amplitude. This is not completely correct but has been done to indicate that here the frequency of the oscillator is of interest and not the voltage level. Said frequency can take two different values determined by the condition of the secondary circuit.
  • a frequency change detector 42 replaces the level detector 34 in Fig. 3. As appears from the middle diagram in Fig 6, detector 42 indicates when the frequency changes from a lower to a higher value, thereby emitting a pulse starting the counter 36. The counter counts the pulses appearing on the conductor 37 and the counting continues until the detector 42 indicates that the frequency again changes to the lower value This change corresponds to a change in the condition of the secondary circuit caused by the opening of contact 24.
  • the detector 42 determines a first time T3 corresponding to the closing of the contact 22a.
  • the frequency is higher than during the time of operation of the counter and, therefore, the number of pulses for each contact is higher than in the embodiment of Fig. 3, resulting in an improved distinguishing capability of the conversion device.
  • the closure of the contact 22b causes the counter to be activated during the time T4 which is twice as long as T3. The number of counted pulses will increase correspondingly.
  • Fig. 7 a practical design of the secondary circuit is shown.
  • the electronic components mounted in this circuit are powered from the oscillator 31 of the primary circuit. If it is of interest to detect level, as in the embodiment of Fig. 3, this means that during periods of low level, when the counter 36 is to operate, the oscillator is heavily loaded which cannot continue during any longer time if the oscillator is to operate safely.
  • the circuit shown in Fig. 6 remedies this drawback by ensuring that during periods of activated counter the secondary circuit does not load the oscillator, i.e. the voltage U c across the capacitor 29 (Fig. 3) has a high level.
  • the logic arrangement is constituted by a counter 45 co-operating with a flip-flop 46.
  • the contact 24 of Fig. 3 here takes tha shape of a transistor switch 47 for AC, compare TRIAC, connected in series with a capacitor 25 (the same reference numeral as in Fig. 3).
  • the counter 45 being of the type 4040, receives clock pulses which are derived from the oscillator voltage and which are led, via a capacitor 48, to the clock pulse input CP.
  • the counter has an output Q4, a RESET input R and a number of outputs connected to an operating device 49 equipped with contacts.
  • the circuit of Fig. 7 will now be described with reference also to Fig. 8.
  • the principle of this circuit is that the oscillator be loaded during short periods of time only as compared to the total time during which the detection of the setting of the operating device 49 takes place. In this way, it is ensured that the oscillator of the primary circuit is not unneccessarily disturbed while at the same time the supply voltage of the secondary circuit is maintained, causing the electronic components of this circuit to operate in a faultless manner.
  • the counter 45 permanently receives clock pulses on the input CP. Now, when a contact in the operating device 49 is actuated, via an OR-gate 50 and an inverter 51 a high level is created on the RESET-input R of the counter which is being reset and then starts to count-up.
  • the high level on the output of the inverter 51 is also led to the SET-input S of the flip-flop 46 setting the flip-flop, which causes the transistor switch 47 to close connecting the capacitor 25 in parallel with the secondary coil 26.
  • a diagram is shown of the capacitor voltage U c (Fig. 3) and the low level corresponds to the condition of the secondary circuit, just described.
  • the output Q4 of counter 45 is activated causing a high level to be applied to a RESET-input R of flip-flop 46.
  • the flip-flop is resetted causing the transistor switch 47 to open and to disconnect the capacitor 25.
  • the voltage U c rises to the high level at which it remains during the continued counting-up of the counter to, in proper order, activate the outputs Q6 - Q9, connected to the operating device 49, in order to detect the closing of any contact.
  • the first time T01 corresponds to a first contact being closed.
  • the time T01 corresponds to the time from the activation of the output Q4 and to the activation of the output corresponding to said first contact.
  • the counter 45 is resetted in the way described via the gate 50 and the inverter 51. Then, the counter restarts with a period of low level until again the output Q4 has been activated.
  • Fig. 8 the first time T01 corresponds to a first contact being closed.
  • the time T01 corresponds to the time from the activation of the output Q4 and to the activation of the output corresponding to said first contact.
  • the closing of a second contact in the operating device corresponds to the time T02, twice as long as the time T01, while a third contact corresponds to the time T03 which is twice the time T02.
  • the times T01, T02, T03 etc. are thus separated by the time T00 representing periods of the same duration and of low level.

Abstract

Un aspirateur (10) est raccordé à un ajutage (14) collecteur de poussières via un tuyau (12) doté d'un manche (12) de tuyau. Ledit aspirateur comprend un ventilateur d'aspiration (17) entraîné par un moteur électrique (18), ainsi qu'un dispositif (20) de commande électrique destiné à la commande et au réglage du régime du moteur pour différents modes de fonctionnement. Ledit dispositif (20) de commande est actionné par un dispositif (21) d'actionnement disposé sur le manche (12) du tuyau et connecté électriquement audit dispositif de commande (20) via deux bobines, couplées l'une à l'autre, dont une bobine primaire (28) est disposée dans l'aspirateur et une bobine secondaire (26) est disposée dans le tuyau. On a prévu un dispositif (31, 34, 36, 38) de conversion, disposé dans ledit aspirateur, pour capter et convertir les états d'un circuit secondaire (25, 26) dont ladite bobine secondaire (26) fait partie, lesdits états correspondant à différents modes de fonctionnement et étant provoqués par ledit dispositif d'actionnement. Ledit dispositif (21) d'actionnement est conçu pour faire fonctionner, via un moyen intermédiaire (23), le circuit secondaire 925, 26) dans deux états électriques séparés. Selon le mode de fonctionnement déterminé par ledit dispositif (21) d'actionnement, ledit moyen intermédiaire (23) fonctionne pour maintenir ledit circuit secondaire (25, 26) dans un état pendant un temps dépendant du mode de fonctionnement choisi.

Claims (9)

  1. Agencement équipant un aspirateur de poussière (10) du type raccordé à une buse (14) collectrice de poussière par l'intermédiaire d'un flexible (11) muni d'une poignée (12), l'aspirateur de poussière (10) comprenant un ventilateur d'aspiration (17) entraîné par un moteur électrique (18) et un dispositif de commande électrique (20) pour la commande et/ou le réglage de la vitesse du moteur, pour différents modes de fonctionnement, le dispositif de commande (20) étant actionné par un dispositif d'actionnement (21) qui est raccordé électriquement au dispositif de commande (20) par l'intermédiaire de deux bobines couplées l'une à l'autre, parmi lesquelles une bobine primaire (28) est logée dans l'aspirateur de poussière et une bobine secondaire (26) est logée dans le flexible, un dispositif de modification (31, 34, 36, 38), installé dans ledit aspirateur de poussière, étant prévu pour détecter et pour modifier différentes conditions, correspondant auxdits modes de fonctionnement différents, d'un circuit secondaire (25, 26) dont ladite bobine secondaire (26) fait partie, lesdites conditions différentes étant provoquées par le dispositif d'actionnement, caractérisé par le fait que le dispositif d'actionnement (21) est réalisé de manière à actionner, à l'aide d'un moyen intermédiaire (23), le circuit secondaire (25, 26) afin qu'il prenne deux états électriques différents, le moyen intermédiaire (23) étant conçu pour maintenir le circuit secondaire (25, 26), selon le mode de fonctionnement réglé par le dispositif d'actionnement (21), à l'un desdits états pendant un intervalle de temps dépendant du mode de fonctionnement réglé.
  2. Agencement selon la revendication 1, caractérisé par le fait que le dispositif de modification (31, 34, 36, 38) comprend un oscillateur (31) pour l'alimentation d'un circuit résonant en série, constitué de la bobine primaire (28) et d'un condensateur (29).
  3. Agencement selon la revendication 1 ou la revendication 2, caractérisé par le fait que la bobine secondaire (26) est raccordée en série à un condensateur (25) et à un contact (24) qui est commandé par le moyen intermédiaire (23), le circuit résonant en série, constitué de la bobine (23) et du condensateur (25), étant modulé sur la fréquence de l'oscillateur.
  4. Agencement selon la revendication 3, caractérisé par le fait que le moyen intermédiaire (23) est un circuit logique muni d'un certain nombre d'entrées auxquelles un nombre de contacts (22a, 22b) correspondant est raccordé, le circuit logique comprenant une minuterie réglable et ce circuit logique étant conçu, lors de l'activation de l'un quelconque desdits contacts, pour fermer le contact (24) raccordé en série à la bobine secondaire (26), durant un intervalle de temps déterminé par la minuterie et correspondant au contact d'actionnement (22a, 22b) sélectionné.
  5. Agencement selon l'une quelconque des revendications précédentes, caractérisé par le fait que le dispositif de modification (31, 34, 36, 38) est conçu pour engendrer un train d'impulsions dont le nombre d'impulsions correspond à la période pendant laquelle le circuit secondaire (25, 26) est maintenu à l'état précité.
  6. Agencement selon la revendication 5, caractérisé par le fait que le dispositif de modification (31, 34, 36, 38) comprend un compteur (36) pour compter les impulsions du train d'impulsions, et un détecteur de niveaux (34) pour déterminer la période durant laquelle le train d'impulsions est délivré au compteur (36), en détectant les variations de tension se produisant respectivement lors du réglage et du rétablissement de l'état précité dans le circuit secondaire (25, 26).
  7. Agencement selon la revendication 5, caractérisé par le fait que l'oscillateur (31) est conçu pour fonctionner à deux fréquences différentes correspondant aux deux états du circuit secondaire (25, 26), le dispositif de modification (31, 34, 36, 38) comprenant un compteur (36) pour compter les impulsions du train d'impulsions, et un détecteur (42) de variations de fréquence pour déterminer la période durant laquelle le train d'impulsions est délivré au compteur (36), en détectant les variations de fréquence se produisant respectivement lors du réglage et du rétablissement de l'état précité dans le circuit secondaire (25, 26).
  8. Agencement selon l'une quelconque des revendications 1-6, caractérisé par le fait que, à périodicité constante et pour des périodes de courte durée, le moyen intermédiaire (23) est conçu pour actionner le circuit secondaire (25, 26) de manière qu'il prenne un état se traduisant par un faible niveau de la tension appliquée au condensateur (29) du circuit primaire, tandis que, lors de l'activation du dispositif d'actionnement (22), ledit moyen intermédiaire (23) est conçu pour actionner le circuit secondaire (25, 26) de façon qu'il prenne l'autre état, impliquant un niveau élevé de ladite tension durant la période déterminée par le dispositif d'actionnement (22) et dépendant du mode de fonctionnement réglé.
  9. Agencement selon l'une quelconque des revendications précédentes, caractérisé par le fait que le circuit secondaire (25, 26) comprend des moyens (39, 40) prévus pour fournir une puissance au dispositif d'actionnement (22) et au moyen intermédiaire (23) à partir de l'oscillateur (31) inclus dans le circuit primaire.
EP90903242A 1989-02-14 1990-01-24 Agencement pour aspirateur Expired - Lifetime EP0409959B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8900504A SE463071B (sv) 1989-02-14 1989-02-14 Anordning vid en dammsugare
SE8900504 1989-02-14

Publications (2)

Publication Number Publication Date
EP0409959A1 EP0409959A1 (fr) 1991-01-30
EP0409959B1 true EP0409959B1 (fr) 1993-05-05

Family

ID=20375046

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90903242A Expired - Lifetime EP0409959B1 (fr) 1989-02-14 1990-01-24 Agencement pour aspirateur

Country Status (6)

Country Link
US (1) US5081738A (fr)
EP (1) EP0409959B1 (fr)
JP (1) JPH03503973A (fr)
CA (1) CA2027551A1 (fr)
SE (1) SE463071B (fr)
WO (1) WO1990009139A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5507067A (en) * 1994-05-12 1996-04-16 Newtronics Pty Ltd. Electronic vacuum cleaner control system
EP0756777B1 (fr) * 1995-02-16 2000-05-10 Koninklijke Philips Electronics N.V. Alimentation electrique et transmission
KR970702527A (ko) * 1995-02-16 1997-05-13 요트.게.아. 롤페즈 저항값에 의한 제어 신호로 저항값을 변환하는 디바이스 및, 그런 다비이스를 포함한 전기 장치(Device for converting a resistance value into a control signal which depends on the resistance value, and electrical apparatus comprising such a device)
ATE223675T1 (de) * 1997-01-21 2002-09-15 Vorwerk Co Interholding Mittels eines elektromotors betriebener staubsauger, insbesondere staubsaugersystem
KR20040038556A (ko) * 2002-11-01 2004-05-08 엘지전자 주식회사 업라이트형 진공청소기
US7673368B2 (en) 2005-10-18 2010-03-09 Panasonic Corporation Of North America Dust bag arrangement and filling indicator for floor care apparatus

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4357729A (en) * 1981-01-26 1982-11-09 Whirlpool Corporation Vacuum cleaner control
US4611365A (en) * 1983-02-12 1986-09-16 Matsushita Electric Industrial Co., Ltd. Vacuum cleaner
US4654924A (en) * 1985-12-31 1987-04-07 Whirlpool Corporation Microcomputer control system for a canister vacuum cleaner
KR940002923B1 (ko) * 1986-10-08 1994-04-07 가부시키가이샤 히타치세이사쿠쇼 전기청소기의 운전방법 및 그 장치
FI84877C (fi) * 1987-03-11 1992-02-10 Siemens Ag Anordning foer fjaerrstyrning av flaektmotorn i en dammsugare fraon sugslangens handtag.

Also Published As

Publication number Publication date
JPH03503973A (ja) 1991-09-05
SE8900504L (sv) 1990-08-15
WO1990009139A1 (fr) 1990-08-23
SE8900504D0 (sv) 1989-02-14
EP0409959A1 (fr) 1991-01-30
SE463071B (sv) 1990-10-08
CA2027551A1 (fr) 1990-08-15
US5081738A (en) 1992-01-21

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